if N == 0 and X>=0 and X<=500 and Y>=0 and Y<=500:
 pass
else:
 if N > 0 and 0*N+X>=0 and 0*N+Y>=0 and 20*N+X<=500 and 20*N+Y<=500:
 pass
 else:
 if N < 0 and 20*N+X>=0 and 20*N+Y>=0 and 0*N+X<=500 and 0*N+Y<=500:
 pass
 else:
 print('Размер фигуры превышает максимальный размер поля')
 exit()